diff --git a/README.md b/README.md
index d6a9300..64bf561 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ $ pip install tianshou
 If you use Anaconda or Miniconda, you can install Tianshou from conda-forge through the following command:
 
 ```bash
-$ conda install -c conda-forge tianshou
+$ conda install tianshou -c conda-forge
 ```
 
 You can also install with the newest version through GitHub:
diff --git a/docs/index.rst b/docs/index.rst
index 09098cb..9ddfb07 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -75,7 +75,7 @@ If you use Anaconda or Miniconda, you can install Tianshou from conda-forge thro
 
 .. code-block:: bash
 
-    $ conda -c conda-forge install tianshou
+    $ conda install tianshou -c conda-forge
 
 You can also install with the newest version through GitHub:
 
diff --git a/tianshou/utils/net/common.py b/tianshou/utils/net/common.py
index 1ce3946..869e2c3 100644
--- a/tianshou/utils/net/common.py
+++ b/tianshou/utils/net/common.py
@@ -36,11 +36,11 @@ def miniblock(
     layers: List[nn.Module] = [linear_layer(input_size, output_size)]
     if norm_layer is not None:
         if isinstance(norm_args, tuple):
-            layers += [norm_layer(output_size, *norm_args)]  # type: ignore
+            layers += [norm_layer(output_size, *norm_args)]
         elif isinstance(norm_args, dict):
-            layers += [norm_layer(output_size, **norm_args)]  # type: ignore
+            layers += [norm_layer(output_size, **norm_args)]
         else:
-            layers += [norm_layer(output_size)]  # type: ignore
+            layers += [norm_layer(output_size)]
     if activation is not None:
         if isinstance(act_args, tuple):
             layers += [activation(*act_args)]